[TRNSYS-users] TRNSYS for LEED

[Fred Betz]

To add to David's comments, we have often used TRNSYS for "exceptional calculations" within LEED submissions. For example I have done some heat pump and heat recovery chiller systems and geoexchange simulations that were beyond the abilities of eQuest.


Fred Betz  PhD., LEED AP
Sustainable Systems Analyst



AEI | AFFILIATED ENGINEERS, INC.
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From: David BRADLEY [mailto:d.bradley at tess-inc.com]
Sent: Friday, February 25, 2011 10:33 AM
To: Lars Knabben
Cc: trnsys-users at cae.wisc.edu
Subject: Re: [TRNSYS-users] TRNSYS for LEED

Lars,
 TRNSYS can be used for LEED certifications. We have successfully submitted about 12 projects to the USGBC and I know of at least two other companies who have also used TRNSYS for LEED EA credit 1 submittals. In my experiences, TRNSYS is an ideal tool for such projects if the proposed HVAC system cannot be modeled using more conventional software. For example, eQuest does not have a radiant floor model but TRNSYS does. TRNSYS is good for doing hybrid GHP (both ground bores and a cooling tower) I would not recommend using TRNSYS for a LEED project that did have a more conventional system (such as VAV) because TRNSYS's flexibility in system modeling means that you have to do a lot of work to model a complete system. Its worth it for complex HVAC systems and a lot of unnecessary work for simpler HVAC systems.
Kind regards,
 David


On 2/25/2011 01:54, Lars Knabben wrote:
Dear TRNSYS users,

for different LEED certifications we use at present eQuest for computation of EA Credit 1 ("Optimize Energy performance "). On the one hand the programm eQuest is not quiet user friendly, on the other hand we use TRNSYS for DGNB (German sustainable building council) certifications, from there it makes sense to use TRNSYS also for the LEED certifications.
Well, is it allowed to use TNRSYS for LEED certifications and does any guidance exist for this approach?


Regards


Dipl.-Ing. Lars Knabben

Geschäftsführer
Beratender Ingenieur IK BAU NRW
Staatlich anerkannter Sachverständiger für Schall- und Wärmeschutz (saSV)
Mitglied der Expertengruppe der Deutschen Gesellschaft für Nachhaltiges Bauen (DGNB)

e² - energieberatung GmbH
Steinstraße 16-18
40212 Düsseldorf
fon: +49 211 516001-58
fax: +49 211 516001-57
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www.equadrat.de<http://www.equadrat.de/>






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